Which tool can be used to create texture in an acrylic painting?

Correct answer: Palette knife

The governing concept is that painting tools can alter the thickness, direction, and surface quality of wet acrylic paint. A palette knife spreads, scrapes, and deposits paint in ridges or irregular marks, so option A is correct for creating texture. A geometry box, pencil sharpener, and calculator are not intended to apply or shape acrylic paint and would not provide controlled painted texture.